Startup Idea: Offline Ballroom Dance Competition Management Software
All the ballroom dance competitions use this old, disliked software to organize and run the events.
The guy who wrote it isn't interested in making improvements, (and it can certainly use improvements) and is happy living off the income from people's per event usage rights.
I am sure if something modern and regularly updated came out, it would get a lot of uptake.
Thing is, the portion of it that runs during the event needs to be able to run offline since venues don't always have reliable internet, and that also means you would be going to at least the first few events for support.. And your tests better be good, since time is of the essence if some does go wrong mid event.
I thought about it, and decided I was not interested in dealing with all that when my job pays pretty well. Still, it's a real opportunity.